dm: Expand and complete Kconfig in drivers/
Expand the help messages for each driver. Add missing Kconfig for I2C,
SPI flash and thermal.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index e1678e6..7ae2727 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -2,5 +2,11 @@
bool "Enable Driver Model for SPI drivers"
depends on DM
help
- If you want to use driver model for SPI drivers, say Y.
- To use legacy SPI drivers, say N.
+ Enable driver model for SPI. The SPI slave interface
+ (spi_setup_slave(), spi_xfer(), etc.) is then implemented by
+ the SPI uclass. Drivers provide methods to access the SPI
+ buses that they control. The uclass interface is defined in
+ include/spi.h. The existing spi_slave structure is attached
+ as 'parent data' to every slave on each bus. Slaves
+ typically use driver-private data instead of extending the
+ spi_slave structure.